20030003 has 8 divisors (see below), whose sum is σ = 23019360. Its totient is φ = 17072640.

The previous prime is 20029993. The next prime is 20030011. The reversal of 20030003 is 30003002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20030003 - 2⁶ = 20029939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20030053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6638 + ... + 9171.

It is an arithmetic number, because the mean of its divisors is an integer number (2877420).

Almost surely, 2^20030003 is an apocalyptic number.

20030003 is a deficient number, since it is larger than the sum of its proper divisors (2989357).

20030003 is a wasteful number, since it uses less digits than its factorization.

20030003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15997.

The product of its (nonzero) digits is 18, while the sum is 8.

The square root of 20030003 is about 4475.4891352790. The cubic root of 20030003 is about 271.5774282949.

Adding to 20030003 its reverse (30003002), we get a palindrome (50033005).

It can be divided in two parts, 200 and 30003, that added together give a palindrome (30203).

The spelling of 20030003 in words is "twenty million, thirty thousand, three".